pypdf: Manipulated XMP metadata streams can exhaust RAM_CVE-2026-48735

6.9 / 10

MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

Basic Information

ID CVE-2026-48735

Source GitHub_M

Published May 28, 2026 at 14:49

Affected Product

Vendor py-pdf

Product pypdf

Version < 6.12.1

Affected Versions py-pdf pypdf < 6.12.1

CWE Classification

CWE-770

References

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    "published": "2026-05-28T14:49:11.814Z",
    "modified": "2026-05-28T14:49:11.814Z",
    "type": "cve",
    "title": "pypdf: Manipulated XMP metadata streams can exhaust RAM",
    "source": "GitHub_M",
    "references": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c\nhttps://github.com/py-pdf/pypdf/pull/3796\nhttps://github.com/py-pdf/pypdf/releases/tag/6.12.1",
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